Norway, Denmark, and Finland are most closely connected to Sweden (and Sweden to Norway).

Interestingly, Finland comes third for Sweden despite being a former colony and everyone speaking Swedish (either natively or as a second language). I guess the tripartite Scandinavian brotherhood trumps any colonial vestiges.

But of course, the Faroe Islands, Greenland, and Iceland (all former Danish colonies) are most closely connected to Denmark. They also learn Danish in school in all three places.

sizes represent the amount of relationships and they're relative to the country you have selected so yes, when you change the country everything scales to show you the relationships from that perspective, it's the idea.